From 96ca59fbf382773bd937e9e4ca06d23845dae46d Mon Sep 17 00:00:00 2001
From: Ben Noordhuis <info@bnoordhuis.nl>
Date: Mon, 17 Sep 2012 07:17:11 +0200
Subject: [PATCH] process: fix setuid() and setgid() error reporting

Zero errno before calling getgrnam_r() or getpwnam_r(). If errno had previously
been clobbered, node would report the wrong error.
---
 src/node.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/node.cc b/src/node.cc
index 309fc963836..7026cec7737 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -1508,6 +1508,7 @@ static Handle<Value> SetGid(const Arguments& args) {
     struct group grp, *grpp = NULL;
     int err;
 
+    errno = 0;
     if ((err = getgrnam_r(*grpnam, &grp, getbuf, ARRAY_SIZE(getbuf), &grpp)) ||
         grpp == NULL) {
       if (errno == 0)
@@ -1548,6 +1549,7 @@ static Handle<Value> SetUid(const Arguments& args) {
     struct passwd pwd, *pwdp = NULL;
     int err;
 
+    errno = 0;
     if ((err = getpwnam_r(*pwnam, &pwd, getbuf, ARRAY_SIZE(getbuf), &pwdp)) ||
         pwdp == NULL) {
       if (errno == 0)